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Self-consistent predictions for LIER-like emission lines from post-AGB stars
Nell Byler, Julianne J. Dalcanton, Charlie Conroy +4
Early type galaxies (ETGs) frequently show emission from warm ionized gas. These Low Ionization Emission Regions (LIERs) were originally attributed to a central, low-luminosity act…
The Imprint of Element Abundance Patterns on Quiescent Galaxy SEDs
Jieun Choi, Charlie Conroy, Benjamin D. Johnson
Stellar population synthesis (SPS) models have long struggled to reproduce observed optical through near-IR (NIR) spectral energy distributions (SED) of massive quiescent galaxies.…
A massive, quiescent, population II galaxy at a redshift of 2.1
Mariska Kriek, Charlie Conroy, Pieter G. van Dokkum +7
Unlike spiral galaxies such as the Milky Way, the majority of the stars in massive elliptical galaxies were formed in a short period early in the history of the Universe. The durat…
Ubiquitous Time Variability of Integrated Stellar Populations
Charlie Conroy, Pieter van Dokkum, Jieun Choi
Long period variable stars arise in the final stages of the asymptotic giant branch phase of stellar evolution. They have periods of up to ~1000d and amplitudes that can exceed a f…
Hiding in plain sight: record-breaking compact stellar systems in the Sloan Digital Sky Survey
Michael A. Sandoval, Richard P. Vo, Aaron J. Romanowsky +10
Motivated by the recent, serendipitous discovery of the densest known galaxy, M60-UCD1, we present two initial findings from a follow-up search, using the Sloan Digital Sky Survey,…
The Assembly Histories of Quiescent Galaxies Since z=0.7 from Absorption Line Spectroscopy
Jieun Choi, Charlie Conroy, John Moustakas +5
We present results from modeling the optical spectra of a large sample of quiescent galaxies between 0.1 < z < 0.7 from the Sloan Digital Sky Survey (SDSS) and the AGN and Galaxy E…